Phonograph.



lc. LfHIBBARD.

PHONOGRAPH. PPILIOATION FILED JULY s1, 1909.

1,646, 1 B8, 5 i Patented Dec. 3, 1912.

' UNiTED STATES 'ParaN'r.ofi-'irioE- CHARLES L. Hieraan, or EAsrEaNoE, NEW JERSEY, Assia-NOE, BY mEsNE ASSIGN- use ofan end gate,

MENTS, :ro-THOMAS' A. EDIsoN,INooEPoRA'rED, or' wnsronaNoE, NEW JERSEY,

A conronArIoN-OENEW JERSEY.

rHoNoGRArH.

i Specification of Letters atent.

I Application alec July 31,1909. serial Nol 510,596.

Patented nee. 3,1912.

dent of East Grange, in the county of Essexand State of New Jersey, have made a certain new and useful Invention in Phonographs, of which the following 1s a de-y scription'.

My invention relates to phonographs,andy

more p'articularlydzo that type of phonograph in which the use of an end gate is dispensed with.

The principal object of mylinvention 1s the provision of novel andl efficient means for supporting the mandrel of a phon'ograph with sufficient rigidity without the IIa-conformity with this object, a rigid stationary tube is supported outside the mandrel of 'the phonograph a-nd extends therethrough, the mandrel being rotatably supported upon the periphery of said tube, while at the same time the driving shaft to which power is applied vto rotate the mandrel extends through the stationary tube and is connectedto the mandrel rigidly or otherwise to drive the latter l, preferably beyond the outer'end of the stationary tube.

Other objects of my invention consist "1n` 'the construction of parts and combinations of -elements, as will be hereinafter-more particularly described and pointed out.

Referring to the accompanying drawing,

V.forming part of this specification, the. figure represents a vertical longitudinal section through the mandrel of a phonograph eguipped with myv invention, certain parts o the vation. -V

. Referring to the .'drawing, the standards 1, 2 and 3' rise fromthe bed plate 4. The stationary tube or sleeve 5 is supported at one end in standard 2, the set screw 6 or equivalent'device securing it rigidly in position. The tube5 is supported only at the one end, as described, and accordingly, -lshould be formed of such a material as to insure its absolute rigidity, steel being preferred. The driving shaft 7 for the phonograph is mounted to extend through the tube 5, the shaft 7'being provided adjacent its left hand end as shown in the drawings, with a portion of enlarged diameter 8, which is adapted torotate within the bearing surphonograph being shown Iin side elethe yleft hand end ofthe tube q5 face 9 within the lleft hand end of the tube 5. It is, howevgrhobvious that this bearing surface might equally well be provided beyond l in the standard 2.

The mandrel 10 is mounted to rotate upon the periphery of stationary sleeve 5, the mandrel being provided at its two ends with short bearing surfaces 11, 12 mounted upon the periphery of the sleeve 5. The bearing surface 12, which is secured to or integral 'with the .outer 'end of the mandrel `10, has

secured thereto or integral therewith the disk 13, within the center of which the right hand end of shaft 7 is supported, set screw 14 securing the shaft 7 rigidly to the members 12, 13 and the'mandrel 10 to which the latter is secured. It is, however, obvious that' any connection by which power might be transmitted from shaft 7 to mandrel 10 is sufficient 'for the purpose. The "shaft 7 is supported by its bearing in bea'i-,

ing surface 9 and by its connection with disk 13 in the .axis of sleeve 5, the diameter of shaft 7 being considerably less than that of the bore of sleeve 5.

Power 'is transmitted to the driving shiaft of the phonograph from a usual motor'by means of a belt, Vneither the belt nor the motor being here shown, the belt encircling `the pulley 15 on the shaft 16 which is supported in upright 1. Shaft 16 is axially in line with the left handend of shaft 7 to which it is adapted to be connected by the clutch 17, which is adapted to be slid back and forth upon the enlarged diameter7 at the extreme left of the driving shaft 7. The gear 18 is also mounted upon the portion 7 of the., dri-ving shaft 7, and from this gear by connections not shown, the feed screw of the phonograph is driven in the usual manner. Lubricant may bc supplied to the various bearing surfaces by the oil holes shown.

Having now described my invention, what I claim and desire to protect by Letters -Pat- .ent is as follows:

1. In a phonograph. the combination with.

a rotatable mandrel, of 'a mandrel sha ft secured thereto to drive the same ind eX- tending therethrough, meansconnccting said mandrel to said shaft adjacent the outer end of the latter, a stationary sleeve surrounding said shaft, and means exterior of said ing therethrough, means connecting said mandrel to said shaft adjacent the outer end of the latter, and a stationary sleeve surrounding said shaft, said mandrel being formed with bearing surfaces rotatably mounted upon. the exterior of said sleeve, and said shaft being of less diameter than the bore of said sleeve, substantially as described.

3. In a phonograph, the combination with va rotatable mandrel, of a mandrel shaft secured thereto to drive the same and extend- .ing therethrough, means connectingT said mandrel to said shaft adjacent the outer end of the latter, a stationary` sleeve sur* rounding said shaft, and means exterior of the said mandrel for supporting said sleeve and shaft, said mandrel being formed with short bearing surfaces adjacent its endsrotatably mounted upon the exterior of said sleeve, and said shaft being of less diameter than the borg of said sleeve, substantially as described. y

4. In a phonograph, thecombination with a rotatable mandrel, of a mandrel shaft secured thereto to drive the same and extending therethrough, means connecting said mandrel to saidshaft adjacent the outer end of the latter, a stationary sleeve surrounding said shaft and supporting said mandrel upon the exter'iorsurface of said` sleeve, said sleeve havingr a bore of Igreater diameter than the diameter of said shaft, and means exterior of said mandrel for supporting,` said sleeve, said sleeve being provided with'a bearing surface at one end thereof within which said shaft is rotatably mounted, substantially as described.

In a phonograph, the combination with a rotatable mandrel having short bearing surfaces at the ends thereof, of a m`andrel shaft secured thereto to drive the same and thereof Within which said shaft is rotatably mounted, substantiallyas described.' This specification signed and witnessed this 29th day of July 1909.

cHARLEs L. HIBBARD.

Witnesses:

JOHN M. CANFIELD, ANNA R. KLEHM.

Copies offtls patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, 2D. C. 

